Question

the cost price of 12 candles is equal to the selling price of 15 candles find the loss percent

Answer 1

Let the CP of each candle = Rs.1
CP of 12 candles = SP of 15 candles
                            = Rs.15

Let the SP of each candle = Rs.1
SP of 15 candles = CP of 12 candles
                           = Rs.12

Loss = CP - SP
        = 15 - 12 = Rs.3

Loss percent = (Gain/CP * 100)%
                     = (3/15 * 100)%

                    = 20%

Answer 2

Answer:

Rs.3

Step-by-step explanation:

Let the CP of each candle = Rs.1

CP of 12 candles = SP of 15 candles

                           = Rs.15

Let the SP of each candle = Rs.1

SP of 15 candles = CP of 12 candles

                          = Rs.12

Loss = CP - SP

       = 15 - 12 = Rs.3

Loss percent = (Gain/CP * 100)%

                    = (3/15 * 100)%

                   = 20%